Aloha, fun & authoritative answers -- no cost, no registration, no passwords, no popups
(as an eBay Partner & Amazon Affiliate we earn from qualifying purchases)

Where the
world gathers for metal finishing
Q&As since 1989

-----

Additives like sodium saccharine and butyne diol in sulfamte nickel plating

Dear sir,

I want to know whether I can use both the additives and levellers in the same bath. By using sodium saccharine, I was able to get good soft shim in my nickel sulphamate bath but I am not getting the shine or the brightness. But the deposit is not hard. Is it ok to use some small quantity of butyne diol to get better shine with some hardness. if so Please specify the quantity to be used for saccarine, and butyne diol.

Thyagarajan krishnan
coaters - Bangalore city, Karnataka state, India
April 10, 2011

Firstly, buytne diol is a leveller and sodium sacharin is a harder that also gives improved brightener. The amount of saccharin needed will depend on the required hardness, but it will normally only go up to about 520Hv, maybe 550Hv. NTS (Napthalene trisulphonic acid) will go to about 600Hv, but they all have their own advantages and disadvantages.
You can use saccharin with butyne diol with no real problems.

Trevor Crichton
R&D practical scientist
Chesham, Bucks, UK
April 18, 2011

(No "dead threads" here! If this page isn't currently on the Hotline your Q, A, or Comment will restore it)

Q, A, or Comment on THIS thread -or- Start a NEW Thread

Disclaimer: It's not possible to fully diagnose a finishing problem or the hazards of an operation via these pages. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations might be harmful.

If you are seeking a product or service related to metal finishing, please check these Directories: